Hikaru, a woman ordered to engage in sexual activities with a man in order to atone for her best friend's crime, follows his instructions and approaches a city prostitute. After experiences such as oral sex in an unoccupied restroom and raw sex in a hotel, Hikaru gradually becomes infatuated with young, virginal penises, transforming both physically and mentally into a prostitute. Then, to the man who announces her release, Hikaru utters a surprising statement.
